Shuttle driver for looms



. June 4, 1929. I KUNZE 1,716,353

SHUTTLE DRIVER FOR LOOMS Filed Nov. 17, 1927 Patented June 4, 19 29.

UNITED STATES mics-r mmwre man, or ennmmr.

. snnmn rm non Looms.

' Application filed November 17, 1927, sci-arm.

It is known to effect the snap stroke of the shuttle by means of a slidable piston by which air is compressed.

These catch devices are rigidly connected with the loom; In order to move the-piston back again into its initial position,'whereby it is only possible that an air cushion can exist on the rearward movement of the piston, it is necessary to use a spring or a special de-' vice (compressor). Through the heavy blows following one another at short intervals a spring is soon fatigued and the spring action slackened, so that the piston is no longer moved back into its initial osition. The device can then no longer its urpose. A

. compressor appliance is very c y and complicates the plant. Y

The invention deals with the fact that the driver is formed in a special manner. It utilizes a mechanical property of the iston based on the to and fro motion of the. 'ver thereby iniparting to the whole device a substantial technical advance. The piston is slidably arranged in the member. Due to the inertia of the piston w enstruck this is always brou ht back again into its initial position wit out the use of special means, theair which escapes automatically again drawn in. The elastic air cushion, which is absolutely necessary for the attainment of the'%ecial advantage of this driver is autoinatica y renewed in an infallible manner.

In the accompanying" drawing the invention is illustrated in one constructional form by way of example. I r 7 233,999, and in Germany November 20, me.

In the driving member a is slidabl arranged the piston 0 provided with an elastic insertion b. By the leather washer dwhich is secured to the piston c in suitable manner 40 the latter is caused to-make an air-tight closure with the driving member. A cross piece e limits the stroke of the piston, and an opening f serves for the suction ofair.

The manner of operation is as follows; upon a stroke of the shuttle, the driver is struck against the shuttle with the piston c. The latter is thereby moved rearwardly and compresses the air in space g.- lUpon this backward strokeof washer d closes the o ning'f and no air canescape. If now the river is moved'back by the striker into its initial position on the wall of the shuttle box, .the piston ismoved iorwardly on account of its inertia and frees the opening f through which air is again drawn 1n. 7 p

a In a shuttle driver for looms havin a re-. cess,in combination, a piston moun with 80 capability of reciprocation in said reces, a catch carried the body of the shuttle driver for t e movements of said piston,

an air vent in the side of said recess, a ll-shaped washer secured to the inner end of said piston, an elastic insertion carried by the outer end of said piston the arrangement being such-that the air vent is covered by the. Zlashher when the shuttle driver strikes the nnn'sr Lnnwle ,KUNZE.

the piston, the leather 50 

